Taxonomical implications of the emergence of high frequency of occurrence of 2,4-diamino-6,7-diisopropylpteridine-resistant strains of Vibrio cholerae from clinical cases of cholera in Calcutta, India.

Abstract

Of the 110 consecutive isolates of Vibrio cholerae recovered from cholera patients admitted to the Infectious Diseases Hospital, Calcutta, India, between July 1989 and October 1990, 90 and 82.7% were resistant to 10 and 150 micrograms of 2,4-diamino-6,7-diisopropylpteridine (O/129), respectively. Additionally, all O/129-resistant strains of V. cholerae were multiply resistant to antimicrobial agents. Except in the cases of four strains, resistance to O/129 was invariably linked with resistance to co-trimoxazole. Although O/129 susceptibility is still a useful test for Vibrio identification, resistance of V. cholerae to this compound in local areas might occasionally pose a problem.

• Authors: T Ramamurthy, A Pal, S C Pal, G B Nair
• Journal: Journal of clinical microbiology (J Clin Microbiol) Vol. 30 Issue 3 Pg. 742-3 (Mar 1992) ISSN: 0095-1137 [Print] United States
• PMID: 1551995 (Publication Type: Journal Article)

Chemical References

• Pteridines
• O 129

Topics

• Cholera (microbiology)
• Drug Resistance, Microbial
• Humans
• India
• Pteridines (pharmacology)
• Serotyping
• Vibrio cholerae (classification, drug effects, isolation & purification)